And this is a strategy that you should review with your accountant or financial advisor, if you have either, for any unforeseen "gotchas" or missed pieces as Lou noted. If you are using this strategy to help delay taking SS, then that piece won't yet be an issue. Minimizing taxes is good but can you live on $100k per year (and pay for all you need, like healthcare, and all you want, like vacations) and how will that depletion compare to your joint life expectancies? Will you run out of money early or have large RMDs at age 72 that trigger large tax bills?
You shouldn't view retirement income in the tax vacuum. If I could take $200k in retirement income less $40k in taxes, knowing it would last my retirement and I could live the life I wanted, or opt to take $100k in annual income, outsmarting the government paying zero taxes as long as possible, but having to scrimp and sacrifice throughout the earliest and healthiest years of my retirement, I choose the former every time.
Sounds like your retirement funds are well diversified from a tax perspective. I would recommend, if you don't already have an advisor, find a reputable fee for service provider and pay for qualified advice that will help you map out a long term retirement income strategy that efficiently minimizes taxes (does not mean eliminate) throughout your joint life expectancies.
There are very smart people on this forum but I would not seek free advice and confirmation of my complex retirement income situation here or any other on-line forum.